Description

In the Linux kernel, the following vulnerability has been resolved:

can: ctucanfd: handle skb allocation failure

If skb allocation fails, the pointer to struct can_frame is NULL. This
is actually handled everywhere inside ctucan_err_interrupt() except for
the only place.

Add the missed NULL check.

Found by Linux Verification Center (linuxtesting.org) with SVACE static
analysis tool.

Classification

CVE ID: CVE-2025-21775

Affected Products

Vendor: Linux, Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 1.72% (scored less or equal to compared to others)

EPSS Date: 2025-03-27 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-21775
https://git.kernel.org/stable/c/84b9ac59978a6a4e0812d1c938fad97306272cef
https://git.kernel.org/stable/c/e505b83b9ee6aa0ae2f4395f573a66579ae403fb
https://git.kernel.org/stable/c/b0e592dd46a0a952b41c3bf6c963afdd6a42b526
https://git.kernel.org/stable/c/e7e2e2318b1f085044126ba553a4e619842fc36d
https://git.kernel.org/stable/c/9bd24927e3eeb85642c7baa3b28be8bea6c2a078

Timeline